question #3 Sahih al-Bukhari 2132, Book 34, Hadith 84 : How does selling unmeasured foodstuff compare to exchanging money for money in Islamic trade principles?

Ibn `Abbas said, “Allah’s Messenger (ﷺ) forbade the selling of foodstuff before its measuring and
transferring into one’s possession.” I asked Ibn `Abbas, “How is that?” Ibn `Abbas replied, “It will be
just like selling money for money, as the foodstuff has not been handed over to the first purchaser who
is the present seller.”